Disk-harrow scraper.



" B. NIESZ.

DISK HARROW SCRAPER.

APPLICATION FILED Nov. so, 1908.

935,680, Patented Oct. 5, 1909.

WITNESSES INVENTOR ATTORNEYS :mouw a Gamm cm Puommnocnmnzns. wAsHmGYoN.n. c.

FRANK B. NIEsz, or CANTON, oHIo, AssIGNo PANY, or CANTON, OHIO, A

CORPORATION OF OHIO.

DISK-HARROW SCRAPER.

Specification of Letters Patent. Application led November 30, 1908.

Patented Oct. 5, 1999. Serial No. 465,395.

To all whom it may concern:

Be it known that I, FRANK B. Nrnsz, a citizen of the United States,residing at Canton, in the county of Stark and State of Ohio, haveinvented certain new and useful Improvements in Disk-H arrow Scrapers;and I do hereby declare that the following' is a full, clear, and exactdescription of the same, reference being' had to the accompanyingdrawing, making a part of this specification, and to the numerals ofreference marked thereon, in which` Figure 1 is a perspective viewshowing a portion of a disk harrow and illustrating the Scrapers inproper relative position with reference to the disks, also showing therock bar and the operating lever, and also showing a portion of anoperating lever designed to actuate the scraper designed to scrape thedisks located upon the rear axle or shaft. Fig. 2 is a sectional view ofone yof the harrow disks and a transverse section of a scraper blade.Fig. 3 is a side elevation of one of the harrow disks illustrating thenormal position of the scraper blade. Fig. 4 is a longitudinal sectionshowing a number of disk spacing collars and a number of disks properlylocated upon the shaft and illustrating the scrapers properly connectedto the rock shaft. Fig. 5 is a view showing the proper relative positionof the scraper blade actuating lever and its guide bracket, showing aportion of the rock shaft.

The present invention has relation to scraper and disk harrows and itconsists in the novel arrangement hereinafter described and particularlypointed out in the claims.

imilar numerals of reference indicate corresponding part-s in all thefigures of the drawing.

In the accompanying' drawino', l represents the shaft or axle upon whichthe various disks 2. are mounted and held in proper spaced relationshipwith reference to each other by means of the usual spacing collars 3.These parts however within themselves form no specific part of thepresent invention. To the bar 4 which constitutes a part of the harrowframe proper are attached the rearward extending bracket arms 5, whichbracket arms are for the purpose of carrying the 'rock bar 6, which rockbar is preferably rectangular or square throughout its entire length butthe apertures 7 formed in the bracket arms 5 are formed round and ofsufficient size to provide suitable bearings for the rocking movement ofthe rock arms 5. Upon the rock bar 5 is secured the short bar or whatmight be termed link 8. To the lower end of which is riOidly attachedthe lever 9, which lever 9 extends forward and upward as illustrated inFigs. 1 and 3 and is so formed for the purpose of bringing the footcontact portion 10 in proper position to be actuated by the foot of thedriver. To the bar 4 or its equivalent is securely attached the bracket11 through which'bracket the lever 9 passes, which bracket is for thepurpose hereinafter described. To the rock bar 6 are securely attachedthe scraper con necting heads 12, to which heads are attached thescraper blades 13, which scraper blades are formed of such a length thatthey will extend down and when in their normal positions besubstantially in a horizontal plane with the shaft or axle 1. It will beunderstood that when the scraper blades 13 are oscillated as hereinafterdescribed there m'ust be some lateral movement owing to the fact thatthe surfaces of the disks 2 upon which the scraping blades 13 come incontact are concaved or dished as illustrated in the drawing, and inorder to provide for this lateral or sidewise movement of the scraperblades the bracket 11 through which the lever 9 passes is provided withthe inclined wall 14e upon which inclined wall the lever rides duringits downward movement and imparts an endwise movement to the rock bar Gand carries the scraper blades with said endwise movement.

It will be understood that the scrapers 13 should be so adjusted thatthey will come in close contact with the concaved surfaces of the disks9. as they are swung outward or toward'the peripheries of the disks 2.It will also be understood that when the Scrapers 13 are brought intotheir normal position they must be carried or moved sidewise orlaterally in the opposite direction from the sidewise or lateralmovement when they are swung outward and in order to provide for thisreturn lateral or sidewise movement the bracket 11 is provided with theinclined wall 15 upon which wall the lever 9 rides during its upward orreturn movement.

It will be understood that the normal position of the lever 9 should beits elevated position,and in order to automatically cle vate the lever 9and automatically swing' the R TO TI-I BCHER & GIBS PJOV COM- scraperstoward the' shaft or axle 1 the spring 16 is provided one end of saidspring being attached to one of the scrapers 13 and its opposite endconnected to form part of the frame. In the drawing I have illustratedbut one spring and when oner spring is einplcyed it should be ofsuiiicient strength to automatically actuate the lever 9 together withthe different parts movable with said lever, but I do not desire to beconfined to a single spring as it will be readily seen that any desirednumber of springs may be employed without in any manner departing fromthe nature of the invention.

In some instances it is desirable to have two shafts or axles and twoseries or sets of disks one series located behind the other and hence itis necessary to provide a second lever such as 1T and a second bracket1S, but these parts are duplicates of the parts described and areoperated in the same manner. It is well understood that disks ofdifferent diameters are employed and hence it is desirable to providemeans whereby the Scrapers 13 will not be thrown rearward beyond theperipheries of the disks but on the other hand it is necessary that theScrapers be thrown rearward a sufficient distance to scrape the entiresurface of the disks but should not be thrown beyond the peripheries ofany disk. In order to provide means for stopping the backward movementof the scrapers so that they will not move beyond the peripheries of thedisks, the lever 9 is 'provided with the adjustable stop block 19, whichstop block is provided with the elongated slot 2O through which slot theclamping bolt ispassed.

It will be understood that by adjusting the stop block 19 to or from thebracket 11 the downward movement of the lever 9 will be limited byreason of the stop block 19 coming in contact with the front or forwardface 23 of the bracket 11. The adjustment of the stop block 19 should besuch that the downward movement of the lever 9 will be stopped at apoint so as to stop the rearward swinging movement of the scraper blades13 when they have passed the peripheries of the disks 2. The stop block19 is provided with the beveled end 22 which beveled end is designed forcontact with the straight wall 23 of the bracket and the stop brought tosuch an adjustment that a thicker or thinner portion will be adapted forcontact with the straight wall thereby limiting the downward movement ofthe lever 9. It will be understood that when the stop block 19 isadjusted so that a small portion of the beveled end 22 enters theaperture, the downward movement will be greater than when a thicker'portion of the beveled end enters between the walls;

It is well understood that in order to give practically the same degreeof frictional contact as between the scraper blades 13 and the surfacesof the disks 2, the rock bar 6 must move endwise during the time saidbar is rocked and the scraper blades oscillated, owing to the fact thatthe disks are concaved. It will be noted that if there was'no endmovement of the rock bar 6 during the time it was rocked, the scraperblades would swing in a true vertical plane if left unobstructed, butowing to the convexity of the disks Q the scraper blades must follow thecurved surface and hence a springing action must take place whichspringing action has a tendency to increase the friction as the scraperblades move outward and by this increased friction the surfaces of thedisks are more or less roughened, which roughened surface has a tendencyto cause the soil to adhere to the surfaces of the disks. By providingan end movement to the rock bar 6 the friction of the scraper blades issubstantially uniform upon the surfaces of the disks during the entirescraping action of the scraper blades.

Having fully described my invention what I claim as new and desire tosecure by Letters Patent, is-

1. In a disk harrow scraper, the combination of a disk harrow, a rockshaft carried thereby, a bracket and a lever located through saidbracket, said bracket provided with inclined walls, the lever adaptedvto actuate the rock shaft, said lever provided with an adjustable stopand scraper blades carried by the rock shaft, substantially as and forthe purpose specified.

2. In a disk harrow scraper, the combination of a disk harrow, a rockshaft carried thereby, a bracket and a lever located through saidbracket, said bracket provided with inclined walls, the lever' adaptedto actuate the rock shaft, said lever provided with an adjustable stophaving a beveled end, and scraper blades carried by the rock shaft,substantially as and for the purpose specified.

In testimony that I claim the above, I have hereunto subscribed my namein the presence of two witnesses.

FRANK B. NIESZ. lVitnesses:

F. WV. BOND,

SYLvIA BORON.

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